Metal-crimping machine.



Patented Aug. 5, |902..

G. CUNIN. METAL cmmPmG MACHINE.

(Application led Ot. 24, 1900.) (No Model.) 5 Sheets-Sheet I,

. Y I, J

v l 2 28/ 82 2J ...l2- n :-J 2.-'. T- v l j "25' l L F135 A55 v C) r 25;

COD

5. 26# 'fi-1, 5 g I 25.3 622 1 /z/ a a j ffn/wzor W'wesm No. 706,030.Patented Aug. 5, i902. (i. (JUNIN.

METAL CRIMPING MACHINE.

(Application led Oct.. 24, 1900.

5 Sheets-Sheet `2.

(N0 Model.)

. CDI/'35 N0. 706,030. Patendug. 5, `|902.

G. CUNIN.

METAL CRIMPING MACHINE.

(Application filed Oct. 24, 1900.)

5 Sheets-Sheet 3.

(No Model.)

No. 700,030. Patented Aug. 5, |902.

0. cumN.

METAL CRIMPING MACHINE.

(Application filed Oct. 24, 1900.)

(No Model.) 5 Sheets-Sheet 4.

me wams mes co. vnomuwn.. wnsnmaro. o. c.

Patented Aug. 5, |902.

G. CUNlN.

METAL GBIMPING MACHINE.

(Application filed Oct. 24, 1900.)

5 Sheets-Sheet 5.

(No Model.)

fly

Jiu/f1: for

wf): asses rw, us

UNITED STATES PATENT EEICE.

GEORGE CUNIN, OF MONTREAL, CANADA.

METAL-CRINIPING MACHINE.

SPECIFICATION forming part of Letters Patent No. 706,030, dated August5, 1902. Application filed October 24, 1900. Serial No. 34,205. (Nomodel.)

To all whom t may concern:

Be it known that I, GEORGE CUNIN, a subject of I-Iis Majesty the King ofGreat Britain and Ireland, residing atthe city of Montreal, in theProvince of Quebec and in the Dominion of Canada, have invented a newand useful Crimping-Machine, of which the following is a specification.

My invention relates to machines adapted to convert metal sheets intopipe elbows and bends, and has for its object the following improvementsover such machines as are already known.

The machine is greatly reduced in size and is very compact. This permitsall the working parts to be short, and they are therefore stronger. Thepoweris applied more directly and with less loss. The parts are fewer innumberandare simplerinconstruction. The adjustments of the various partsare more delicate and more rapid than heretofore. Several newadjustments are employed.

The machine is designed to operate on pipe of various sizes by the useof interchangeable parts, which enables it to crimp pipe of smalldiameter, as well as the usual sizes.

Reference will be made to the annexed drawings, in which like signsrepresent like parts in the various figures.

Figure 1 is a side elevation showing the mechanism for starting andreversing. Fig. 2 is an end elevation showing the crimping mechanism andits adjustments. Fig; 3 is an end elevation showing the feed mechanism.Figs. 4, 5, 6, 7, and 9 are details of the feed mechanism. Fig. Sis across-section showing the crimping and creasing mechanism, thepipe-clamp, and the various cams on the main shaft. Fig. 10 is asectional view of the mandrel-sleeve and reciprocating head. Fig. 11 isan end view of the reciprocating head. Fig. 2 is a side view of theparts shown in Fig. 10. Fig. 13 is a horizontal cross-section of themachine, showing the main cam-shaft and the position of the variouscams, levers, also the power shaft and clutch.

The frame of the machine consists in a hollow standard I, of oblongform. The shafts 5, 6, 631, 651, and 621 are journaled in the oppositesides of the frame. The edges 11 of the top provide slides for thefeed-carriage 2. A hollow casting 40, rmly secured to one end of thetop, supports the mandrel 4 and provides a bearing for the gear-wheel 22of the feed mechanism. At the front end of the frame a face-plate 3 ishinged to the upper edge by means of the screw-pins 131 and the bearings13. Beneath this is a slideway 33, forming part of the face-plate 3, andthe slideway 171 on the front end of the frame I. The mandrel 4 ishollow and has a sleeve 42, slotted at 49 to engage a pin 4S. A rod 7reciprocates through the mandrel 4 and sleeve 42 and operates thecreasing and smoothing mechanism. A pinion 50, meshing with a gearwheelon the cam-shaft 6, is connected and disconnected to the power shaft 5by the clutch 52. The shaft 6 has the cam 62 keyed to it at the middle,and the levers 620 and 630, pivoted, respectively,to the shafts 621 and631, operate the crimping'and creasing mechanism and the smoothingmechanisrmas will be described in detail. Between the cam 62 and thegear-wheel 60 a cam 64 is keyed to the Ashaft 6 and operates `aflever640, which is secured to the projection 36 of the face-plate 3.

. On the other side of the central cam 62 the cam 65, through the lever650, pivoted to the shaft 651 and having the wedge-shaped end 652, opensand closes the collar 37 of the faceplate 3, to be described below.Beyond the cam 65 on the shaft 6 is the cam 66, which acl tuates thefeed-lever 660.

The feed-carriage 2, supported on the slides 11, travels on two screws21 2l, which are provided with pinions 211 211 beyond their bearings.These pinions 211 211 mesh with the gearwheel.22,rwhich controls themovement (of the feed-carriage.

The manner in which the feed-lever 660 operates the gear-wheel 22 willbe lset forth below.

The crimping-jaws are four in number. A lower pairv 357 357 are pivotedto the frame 34 by the pins 353 353, and their overlapping edges areloosely -pivoted on the central pin 350, their lower edges fittingagainst the flange 345 of the frame 34. This frame 34 is provided withtwo curved segments 341 341, pivoted to itsupper corners. These segments341 have iiat surfaces to bear on ythe rollers 342 which have adjustablebearingson each side of the upper portion of the face-plate 3 andset-screws 343 and 344 to adjust their po- IOO sitions. The upper pairof crimping-jaws 356 356 are screwed to these segments 341 341,respectively. The guide-bars 352 overlap the lower pair of jaws and aresecured to the segments 341.

The tilting plate 3 is adapted to receive a divided collar 37, which canbe changed for, various sizes of pipe by removing the cross head 39. Thecollar 37 hasits upper half secured to the face-plate 3,'while the lowerhalf is adapted to reciprocate vertically to open and close the collarby means of the wedge G52, operated by the bell-crank lever 650.

The face-plate 3 tilts on its bearings 13 and is controlled by thecam-lever 640, which is secured to an angle-piece 36, extending from theface-plate 3. The guides 33 hold the lower portion 340 of thecrimping-frame 34 between them.

Aslide-piece 17, between the guides 171, secured to the front end of themachine-frame I, carries the motion of the cam-lever 620 to thecrimping-frame Adjustment-screws 172 limit its path.

The shaft 621, on which the cam-lever 620 turns, is provided witheccentric bearings 623, so that a very slight turn by the lever 622 ofthe shaft 621 varies the stroke of the lever G20 and permits of a verydelicate adjustment of the motion given to the crimping-jaws. This is ofgreat importance, as it permits the crimping to be adjusted to sheets ofmetal of diderent thicknesses and of different hardnesses.

An adjustable locking-lever 622 operates the shaft 621.

The lever620 at its inner end has an elbow carrying rollers to meet theange of the cam 62.

The starting-lever 56 when unlocked to start the machine moves on thesegment 561 with the opening and closing of the clutch without locking.

A loose crank 24 on the same pivot and out- Aside the notched wheel 23has an offset eX- tension 241, in which there is a beveledspringregulated tooth 242, which only catches the notch 231 travelingone way. Means are provided to transfer the movements ofthe feedever tothis crank.

The feed mechanism is shown to be operated by the lever 660, controlledby the cam 66, projecting through the slot 18, acting on theconnecting-rod 245 through the geared levers 246 247. By adjusting therod 245 on the lever 246 the stroke of the crank 24 can be varied togrip dierent sets of notches 231 on the wheel 23 and give thefeed-carriage the necessary variations of feed for pipe of varioussizes.

The tooth 242 is attached to a cylindrical cam 243, which fits intospiral indentations in the lever 244.

The rod 28 has stops 281 and 282 and projections 283 and 284, which turnthe lever 244 and raise the tooth 242;when the feedcarriage has reachedthe s-top28-1. The carriage being then returned by the pinion 25 throughthe pulleys 251 and 252 meets the stop 282 and the rod 28 returns thelever 244, lowers the tooth 242 by the spring 245, drawing' theprojections 246 into the indentations 247, and the notched Wheel 23again operates the feed. The feed-carriage 2 is returned by means ofanother pinion 25, meshing with the feed gear-wheel 22, which, with itspulley 251, runs loosely, but is belted to a pulley 252, having abevel-gear 253 connecting with the main power-shaft 5. A belt-tightenerpulley 254, operated by a bell-crank lever 255 at the crimping end ofthe machine, brings the reversing-pinion 25 into play and causes thefeed-screws 21 to return the feed-carriage` 2 to the starting-point.

The creasing and smoothing mechanism consists of the sleeve 42, whichslides on the mandrel 4 and is retained by the pin 48 in the slot 49. Itis provided with a head 43, preferably integral therewith, having aprojecting shoulder 431, which is rounded to allow the bend of the pipeto clear it. The reciprocating rod 7 passes through the center of thehead 43 and has the projection 72 and the tube 711, with its extension71, secured by the nut toits end. The movable headpiece 70 fits over thetube 711 outside the head 43 and is rounded on each side to restoutwardly on the bearings 45 and inwardly on roundedbearings 432. Thescrew-nuts 46, which pass through the rounded bearings 45 and theheadpiece 70, permit the adjustment of the headpiece on the bearings 45and 432. `The loose pin 44 passes through the head 43 below the rod 7and is actuated by the projection 72 to press the lower edge of theheadpiece 70 outward and is returned when the rod 7 is drawn in,bringing with it .the parts 71 and 70. The headpiece 70 is thereforeactuated in both directions before the sleeve begins to move.

The operation of the machine is as follows: A metal sheet is placedaround the sleeve and mandrel and clamped to the feed-carriage with theoverlapping edges downward. The collar 37 is closed and holds the pipefirmly at the head-plate 3, which is vertical. When the rod movesforward, the pin 44 pushes the movable head 70 outward and a groove isprovided in which the crimp is to be formed. The jaws now close in andpress the metal, first the lower pair and then the upper pair, and acrimp is formed deep at the bottom and diminishing toward the top oneach side. The jaws then expand by theframe descending and the rod 7starts to retire. The extension 71 presses the movable head 70 inwardand creases the sides of the crimp together, while the head-plate 3tilts slightly forward. The rod, head, and sleeve then retire fartherand the crimp is turned down and flattened by the head, while thehead-plate 3returns to its vertical position. The collar 37 releases thepipe bykthe lower segment descending and the feedcarriage moves forwardand brings the pipe IOC IIO

with itin position for the next crimp, when the collar closes againaround the pipe and the operations are repeated. When the desired numberof crimps have been made, a stop-281 meets the feed-carriage and cutsoff the feed mechanism, while the arm 29 meeting the stop releases theclutch andthe machine stops working. The operator then looses the clamp2G, removes the elbow, and inserts a fresh sheet, which he clamps,andthen turns the lever 255, which brings the reversing-gear into play. Thetightener-pulley 254: tightens the belt connecting the pulley 252,geared-by the bevel-gears to the shaft 5, with the pulley 251, whichoperates the pinion 25. This pinion meshes with the gear-wheel 22 andactuates the screw-pinions 21 21, which bring the feedcarriage back tillthe stop 282 starts the feed mechanism and the stop 56 closes the clutch25 and starts the crimping mechanism again.

lVh'at I claim as new, and desire to secure by Letters Patent, is-

1. In a pipe-elbow machine, the combination with crimping mechanism andcreasing mechanism, and a cam-Wheel geared to the power-shaft within themachine-frame and operatively connected by means adapted to crimp andcrease alternately, as described.

2. In a pipe-elbow machine, the combination with crimping mechanism andcreasing and folding mechanism, and a rotating oval cam adapted toactuate each mechanism alternately, a face-plate pivotally supported onthe edge of the frame, and means for tilting the face-plate, asdescribed.

3. In a pipe-elbow machine, the combination with crimping mechanism andcreasing and folding mechanism, and a tilting faceplate provided with asupporting-collar, and means for tilting same, as described.

4c. In a pipe-elbow machine, the combination with crimping mechanism andcreasing and folding mechanism, and a sliding collar supported on atilting face-plate, and means to open and close collar upon pipe. I

5. In a pipe-elbow machine, the combination with crimping mechanism andcreasing and folding mechanism, a tilting face-plate and means fortilting same, and a sliding collar supported on face-plate and means toopen and close collar, as described.

G. In a pipe-elbow machine, the combination with a tilting face-plate,of a reciprocating frame with crimping-jaws attached thereto, and asliding collar, as described.

7. In a pipe-elbow machine, a feed mechanism comprising a carriageprovided with a pipe-clamp traveling on two screws, each having a pinionmeshing with a gear-wheel, and means to rotate the gear-wheel, asdescribed.

S. In a pipe-elbow machine, the combination of a hollow stationarymandrel, with a reciprocating rod therein, a slotted sleeve on the endof the mandrel, a movable head pivotally supported on A the outer end ofthe sleeve and operatively connected with the rod, and a forkedbell-crank lever in sliding contact with a cam mounted on a countershaftbeneath the mandrel, as described.

9. In a pipe-elbow machine, a stationary hollow mandrel, having aslotted sleeve, a'

headpiece thereto havinga projecting shoulder, a movable headpiecehaving bearings on the sleeve,and means to reciprocate the sleeve andoperate the movable headpiece, as described.

10. In a pipe-elbow machine, a stationary hollow mandrel having. aslotted sleeve, a headpiece thereto having a projecting shoulder, amovable headpiece having bearings on the sleeve, and means toreciprocate the sleeve and operate the movable headpiece, a loose pin inheadpiece, and a reciprocating rod with projections adapted to operatethe movable head as described.

1l. In a pipe-elbow machine, the combination with crimping mechanism ofan actuating-lever provided with eccentric bearings adapted to adj ustthe stroke of the crimpingjaws, as described.

12. In a pipe-elbow machine, the combination of a feed-carriage providedwith a pipeclamp, and screw-threaded bearings, two parallel screwsadapted to operate feed-carriage with pinions thereto, a gear-wheelmeshing with the pinions and means to rotate the gear-wheelintermittently when feeding, and continuously when returningfeed-carriage, as described.

13. In a pipe-elbow machine, a stopping and starting mechanismconsisting of a rod reciprocated by feed-carriage by means of stops, andmeans of connecting and disconnecting feed gear-wheel withfeed-operating mechanism, as described.

14.' In a pipe-elbow machine, the combination of a feed-carriageprovided with a pipeclamp traveling on two screws, each having a pinionmeshing with a gear -wheel and means to vary the amount of rotation ofthe gear-wheel, as described.

15. In a pipe-elbow machine, a reciprocating sleeve provided with aprojecting shoulder curved to support the uncrimped portion of thepipe-bend beyond the movable head of the creasing mechanism.

And I have hereunto set my. hand in the presence of the two undersignedwitnesses.

Montreal, October ll, 1900.

GEORGE CUNIN. y

Vitnesses:

HENBURY` A. BUDDEN, A. L. CARON.

ICO

